Reactive azo dyes containing triazine groups quaternized by nicotinic acid



Patented July 7, 1970 REACTIVE AZO DYES CONTAINING TRIAZINE chromogenNH-O C-N GROUPS QUATERNIZED BY NICOTINIC ACID l I ll Sandro Ponzini, Saronno, Italy, assignor to Aziende Colori Nazionali Afiini ACNA S.p.A., Milan, Italy 5 O No Drawing. Filed Aug. 3, 1966, Ser. No. 569,803 I/ Claims priority, application Italy, Aug. 9, 1965,

17, 1/65 (COONa)m (II) Int. Cl. C09b 62/38, 62/40, 62/42 US. Cl. 260-146 9 Claims 10 wherein R, R and n are as defined above and m is 1 or 2.

The chromogen can be the residue of an azo, a metal- ABSTRACT OF THE DISCLOSURE lized azo, an anthraquinone, or a phthalocyanine dye- Reactive triazine dyestuffs having the formula: stuff.

R The azo dyestuffs of the present invention have for- N mula: c|hromogenNHv '/WN\ v (soma)n Y L B1 N R 01H a RsN=NR2-NHC fi-N\ (SO3Na)n (soaNa)D N N R1 000Na)m wherein the chromogen is a dyestuif residue selected from T the group consisting of azo-, metallized azo, anthraqui- (PM none and phthalocyanine dyestulf residues, said chromogen being attached to the NH bridging group 0 0..

through a carbon atom of an aromatic nucleus of said chromogen selected from the group consisting of benzene and naphthalene, R and R are each selected from wherein m is l or 2, R and R are each selected from the group consisting of hydrogen, phenyl and phenyl subthe group consisting of hydrogen, phenyl, and phenyl stituted with SO H and COOH, n is an integer from 1 substituted with SO H and COOH, and wherein R and t0 4 and m is 1 are Particularly effective for yc- R are each a nucleus selected from the group consisting cellulose fibers. The dyestuffs may be absorbed and ing of nuclei of the phenyl and naphthyl series, each of fixed onto the cellulose fibers by known hot or cold dyen and p being 0 or an integer from 1 to 4 and the sum ing techniques. of n and p being from 1 to 4.

. According to the presently preferred method of producing the dyestuffs of the present invention the quater- The resent lnvention relates to a series of reactive triazine dyestuffs capable of being chemically adsorbed mzed reactive mazm? y l prepared by reactlon d fi d mo Cellulose fibers b CO1 d or hot d sin of a metallic salt of isomcotimc acid or one of the lower yg of the presentyinvention are g g 40 alkyl esters thereof with a reactive dyestufi Within the by means of a quarternization reaction of reactive triazine ge.neral Fo.rmu1.a In thls y rfaactlve dyestuffs. are 9 dystuffs of the gener a1 formula: tamed hav ng lmproved application characteristics, with generally increased tlnctorial yields and presentlng the advantage of being applicable both by the cold (Ml-60 chromogen-NH-C C -N C.) and by the hOt (7095 C.) method. (so N l The compounds having the general Formula II are a a) N N R1 new 1ndustr1al products. 1

It is surprising to observe that the quaternization of the 01 (I) dyestuffs of general Formula I with a metallic isonicotinate where R and R are each selected from the group congenerally {$51113 y Which exhibit, will} the Cold sisting of hydro'gen, alkyl radicals 'or aryl radicals, which method, tlnctol'lal ylelds h are oblall'lable by radicals may be substituted with lower alkyls, halogen, the use as a dyemg catalyst (accofdlng t0 Mellland f N0 21 sulphonic acid group, COOH, etc.; and n is an 44, 932-935 Promoter of other ternary integer f 1 t 4, organic amines, and particularly as compared with using The following amines may be NRR substituents aliphatic tertiary amines, such as trimethylamine and on the second carbon atom of the triazine: sulphonanisymmetric dimethyl-hydrazine. This. isall the more reline (metanilic, sulphanilic and orthanilic acids) car'- markable inasmuch as the hydrosolubihzmg substltuents boXy-anilines such as xylidine, anthranilic acid, toluidine, (SO H and COOH) generally dlH'llIllSh the afiimty of the naphthylamine, sulphonaphthylamines such as 1,4-suldyestuifstowards cellulose fibers. phonaphthylamine, methylamine, dimethylamine, butyl- Also, in the dyeing by the hot method 70-95 3.) amine, hydroxy-alkyland bis(hydroxyalkyl)-amines such of cellulose materials wlth the same quarternized reactive as ethanol and diethanola-mine, propanolarnine, medyestuffs, improvements of tinctorial yields are observed. thoxy-propylamine, etc. In this way, there is provideda class of reactive dyestuffs The quaternized reactive dyestuifs of the present inwhich can advantageously be applied both by the hot and vention have the general formula by the cold method.

3 The use of isonicotinic acid or of one of its alkyl esters, as the quarternizing agent for the above-mentioned chlorotriazine dyestuffs, usually affords the [following advantages with respect to the use of other quaternizable tertiary amines:

(1) Dyeing of the cellulose fibers, by the cold method,

without the use of dyeing catalysts.

(2) 'In most cases, increase of the tinctorial yields, particularly in cold dyeing, with respect to the use of known dyeing catalysts comprising tertiary aliphatic amines.

(3 Contrary to some other tertiary bases, used both as dyeing catalysts and as quaternizing means in the preparation of the dyestuffs, isonicotinic acid is odorless and, therefore, both the cold and the hot dyeing baths are completely without disagreeable or irritating odors.

(4) Increased solubility of the dyestuff.

(5) Possibility of dyeing of cellulose materials by the normal hot method, with the same quaternized dyestuffs, in those cases in which practical considerations would make the hot method preferable.

(6) Having available for the dyeing a rather wide range of usable temperature, it is easier to find, when it is desired to employ a mixture of dyestuffs, especially of different types, a common optimum temperature for fixing the dyestuffs onto the fiber in the dyeing bath, i.e. a temperature apt to give the best tinctorial efficiency for each of the components.

(7) The use of isonicotinic acid also affords cost advantages since the excess reagent employed in the quarternization reaction can be recovered by filtration of the mother liquor, after acidification thereof, and then reused.

The quaternization is preferably carried out by dissolving the dyestuffs in a 2 to 10% solution of a metallic salt of isonicotinic acid. The reaction temperature can be varied between enough wide limits, but is preferably kept between 60100 C. The reaction rate, of course, is influenced by the temperature and can be followed by means of chromatographic examinations.

The quaternized dyestuffs of the present invention can be used for dyeing natural and synthetic polyamide fibers as well as the above-mentioned cellulose fibers.

The following examples are presented to further i'l- 'lustrate the present invention without in any way limiting the scope thereof. Unless otherwise indicated all parts and percentages are by weight.

EXAMPLE 1 2 parts of isonicotinic acid and 0.64 part of 100% NaOH were dissolved in 100 parts of water. The solution was heated to 75 C. and 4 parts of the following dyestufi were added:

BOaNa The solution thus obtained was kept at 75 C. over night (about 15 hours). The quaternized dyestutf was then salted out, filtered, and dried. If desired, the salting out and filtration steps can be omitted and the dyestufi dried directly, at 60 C. in a Niro apparatus (spray drier).

The dyestuff obtained dyed cotton, at a temperature of 35-40 C., with very good tinctorial yields, in a violet shade of excellent fastness to washing.

EXAMPLE 2 2 parts of isonicotinic acid and 0.64 part of 100% NaOH were dissolved in 100 parts of water. The solution was heated to 75 C. and 5 parts of the following dyestuff were added:

Then the procedure described in Example 2 was followed.

The dyestufl thus obtained dyes cellulose material in a black shade of very good tinctorial yield and fastness to washing.

EXAMPLE 4 2 parts of isonicotinic acid and 0.64 part of 100% NaOH were dissolved in 95 parts of water. The solution was heated to C. and 5 parts of the following dyestuif were added:

O NHz H y SOsNa I 0 NH- SOaNa (E l lH-N NH SOaNa The solution was kept at 0 C. for about 15 hours and then the procedure described in Example 1 was followed. The dyestufi thus obtained dyed cotton, at a temperature of 60 C., in a blue shade of excellent fastness to washing.

EXAMPLE 2 parts of isonicotinic acid and 0.64 part of 100% NaOH were dissolved in 95 parts of water. The solution was heated to 80 C. and 4 parts of the following dyestutf were added:

wherein Ft is a phthalocyanine nucleus. Then the procedure described in Example '4 was followed.

The dyestuff thus obtained dyed cotton, at a temperature of 60 C., in a turquoise shade with very good tinctorial yields and with excellent fastness.

EXAMPLE 6 To 100 parts of water 2 parts of isonicotinic acid, and 0.64 part of 100% NaOH were added. The solution was heated to 80 C..and 4 parts of the following dyestuff were added:

The mass was kept at 80 C. for overnight (about 15 hours). The quaternized dyestutf was dried directly at 60 C. in a Niro apparatus.

The reaction product thus obtained dyed cotton, at a temperature of 35-40 C., with very good tinctorial yields, in a violet shade having excellent fastness to washing.

EXAMPLE 7 2 parts of isonicotinic acid and 0.64 part of 100% NaOH were dissolved in 100 parts of water. The solution was heated to 80 C. and 5 parts of the following dyestuff were added:

J r Y SOaNa HO NH-i: d-NH-Q I N N=N NaOaS- SOBNS.

The solution was kept at 80 C. overnight. The quaternized dyestuff was then dried directly at -60 C. in a Niro apparatus. g V

The reaction product thus obtained dyed cotton, atv a temperature of 3540 C., with very good tinctorial yields, in a red shade having excellent fastness to washing.

EXAMPLE 8 2 parts of the methyl ester of isonicotinic acid were mixed with 7 parts of water and 2 p./vol. of a 36 B. NaOH solution and the solution was heated for 30 minutes at 40 C. The pH of the solution was then adjusted to 7.0 with a 10% solution of HCl.

The mass was diluted to 100 parts'per volume with water and 4' parts of the following dyestuff were added:

| N=N N K/ SOaNa S OaNa The solution was kept overnight at C. The quaternized dyestuif was dried directly at 60 C.

The thus obtained dyestutf dyed cotton in a red shade having excellent tinctorial yield and fastness to washing.

EXAMPLE 9 A dyeing bath was prepared by dissolving 2 parts of the dyestutf prepared in Example 7 in 2000 parts by volume of water, at a temperature of 35 C.

partsof cellulose material were introduced into the dyeing bath.

After 15 minutes, 60 parts of anhydrous Na SO were added; after further 15 minutes, 60 parts of anhydrous Na SO were added; after further 15 minutes, 15 parts of Na CO were added. Finally, after further 15 minutes, 15 parts of Na CO were added. The dyeing bath was kept at the temperature of 35 C. for another hour in order to complete the fixing of the dyestufi and then the material was treated for 30 minutes at the boiling point with a soap (Marseille-soap) solution having a soap content of 0.3% and rinsed with water. v

A cellulose material dyed in a red shade having excellent fastness to wet treatments was obtained, with very good tinctorial yields.

EXAMPLE 10 A dyeing bath was prepared by dissolving 2 parts of the dyestutf prepared in Example 7 in 2000 parts by volume of water, at a temperature of 50 C.

100 parts of cellulose material were introduced into the dyeing bath.

After maintaining the bath at a temperature of 50 C. for 15 minutes, 60 parts of anhydrous Na SO were added. The temperature of the bath was then adjusted to 60 C. and, after maintaining the bath at 60 C. for 15 minutes, 60 parts of anhydrous Na SO were added. Then the bath temperature was adjusted to 70 C., maintained for 15 minutes at this-temperature, and 15 parts of Na CO were then added. Then the bath temperature was adjusted to 80 C. and maintained at 80 C. for- 15 minutes, whereupon 15 parts of Na CO were added.

The dyeing bath was kept at 80 C. for another hour. The material was then treated at the'boiling point for 30 minutes with a soap solution having a soap content of 0.3% and thoroughly rinsed.

A cellulose material dyed in a red shade having ex-, cellent fastness to wet treatments was obtained, with very good tinctorial yields.

Variations can, of course, be made without departing from the spirit and scope of the invention.

Having thus described the invention, what is desired to be secured by Letters Patent and hereby claimed is:

. 1. A reactive triazine dyestuif having the formula: /N 01 RaN=NRz-NHC \CN\ l l (SOsNaJn (SOaNa); N\ /I i R1 "16 N I COONa wherein m is 1 or 2; R and R are each selected from the group consisting of hydrogen, phenyl and phenyl substituted with SO H and COOH, and wherein R and R 3,519,614 7 8 are each a nucleus selected from the group consisting of 8. The dyestufi of claim 2 which has the structure:

nuclei of the phenol and naphthyl series, each of n and p being or an integer from 1 to 4 and the sum of n and p being from 1 to 4. c

2. The dyestutf of claim 1 wherein the chromogen is 5 i GOONa a metallized azo dyestuff. i

3. The dyestufi' of claim 1 having the formula:

N R 01H N N (5 ll RaN=NRaNH-C fi-N\ O--Cu---|0 I-|IH- /CNH soaNa soaNa)p N N R1 N N (4) i SOaNa SOaNa -SO3Na OONa)m 1 4. The dyestuif of claim 3 which has the structure:

C1) +I| I -COONa 0 S'OaNa N/ Na0zSN=N-N=NNHJJ ii-NH-Q-SOaNa SOaNa 5. The dyesuft of claim 2 which has the structure: 9. The dyestuif of claim 3 which has the structure:

l v N N N=N SOaNa OH NEE-( ii-NH-Q l l soiNa SOaNa N SQBN SOaNa SOaNa 6. The dyestuff of claim 2 which has the structure: 40

NaOaS- N=l l /N\ SOaNa NH-(l3 (II-NH: N0

ni -CO0Na 7. The dyestuff of claim 3 which has the structure: References Cited i UNITED STATES PATENTS L 3,116,275 12/1963 Gamlen et al. 260-153 XR \N FOREIGN PATENTS N soaNa 0H NYE- i! iLnn- 946,998 1/1964 Great Britain. I l 982,479 2/1965 Great Britain.

N: G FLOYD DALE HIGEL, Primary Examiner SOaNa US. 01. X.R.

some 5 260-153, 249, 242; 8-41, 42, 40, 54.2, 55, 50

32 3 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 519 614 Dated July 7 1970 It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

zolumn 2, line 15, "invention have for" should read inventi o h have the Column 2, second structural formula should read 5;

Columns 3 and 4, first structural formula SO Ne 'SO Na should read Columns 3 and 4, first structural formula should read S so Na *;g;;g i UNITED STATES PATENT OIPFICE CERTIFICATE OF CORRECTION Patent No. 3,519,614 name July 7, 1970 Inventor(s) Sandro Ponzini It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Column 5, first structural formula SO Na 0 Na should read Column 6, the structural formula in claim 1 l l +N COONa +N should read (COONa) Column 7, claim 2, "wherein the chromtgen" should read which the structural formula in claim 3 should read IN COONa L (COONa) UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3 519 614 Dated l) 7 1970 Invent r( Sandro Ponzini It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

ColuTnh 7 claim 4 Cl L) should read c1 Column 7 claim 5 should read FORM F'O-1050 (10-69) USCOMNFDC 5375 pq a u s, sovnunzu-r rmrmncorncr; uu o-Ju-nA 253 3 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,519,614 Dated Julv 7 1970 Inventor s) Sandro Ponz ini It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

q Column 7 claim 6,"- (Cr-Co" should read (Cr-Co) --i claim 7 should read Column 8, claim 8 should read -NH Column 8 claim 9,

Cl should be placed around the structural formula.

* g gg UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Petent No. 3,519,614 Dated July 7, 1970 Inventofls) Sandro Ponzini It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

q Column 8, the structural formula in claim 9 .r, H 0H NH- should read 3 s0 Na Signed and sealed this 21;.th day of August 1971.

(SEAL) Attest:

EDWARD M.FLEICHER,JR WILLIAM E SCHUYIE I O R JR. Attesting Officer Commissioner of Patents 

